共 12 条
[4]
Screening for fetal trisomies by maternal age and fetal nuchal translucency thickness at 10 to 14 weeks of gestation
[J].
BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY,
1995, 102 (12)
:957-962
[7]
The hidden mortality of monochorionic twin pregnancies
[J].
BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY,
1997, 104 (10)
:1203-1207